Synthesis and anion recognition properties of two novel tetraamide calix[4](aza)crowns for optical anion sensor

  • Ling Zhi Meng*
  • , Gong Xiong Mei
  • , Yong Bing He
  • , Zhen Ya Zeng
  • , Shun Ying Liu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Two new tetraamide calix[4](aza)crowns (5a, 5b) were synthesized and used for optical anion sensors. Addition of host 5a or 5b to the p-NO 2C6H4O- anion in CHCl3 resulted in decreasing absorption of band at 423 nm and the yellow solution of p-NO2C6H4O- anion became colorless because of the formation of host-guest complexes between host 5a or 5b and p-NO2C6H4O-. The fluorescence response was observed in the presence of anions such as p-NO2C 6H4O-, F-, H2PO 4-, and the receptors 5a and 5b were highly selective toward p-NO2C6H4O-. The degree of change in the emission intensity was in the order of p-NO2C 6H4O->F->H2PO 4-≫Cl-, Br-, I-. The fluorescence spectroscopy titration experiments indicated the formation of a 1:1 stoichiometry complex between receptor 5a (or 5b) and anion by nonlinear fitting curve.

Original languageEnglish
Pages (from-to)416-420
Number of pages5
JournalActa Chimica Sinica
Volume63
Issue number5
StatePublished - 2005
Externally publishedYes

Keywords

  • Anion recognition
  • Fluorescence
  • Sensing
  • Synthesis
  • Tetraamide calix[4](aza)crown

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